/Engine/Plugins/Experimental/Mutable/Source/MutableTools/Public/MuT/Node.h
Possible subclasses.
enum EType { Colour = 0, Component = 1, Image = 2, Layout = 3, LOD = 4, Mesh = 5, Object = 6, PatchImage = 8, Scalar = 9, PatchMesh = 13, Volume_Deprecated = 14, Projector = 15, Surface = 16, Modifier = 18, Range = 19, String = 20, Bool = 21, ExtensionData = 22, None, }